June 2013
Beginner
388 pages
10h 9m
English
book
Beginning JavaScript with DOM Scripting and Ajax, Second Edition
by Russ Ferguson, Christian Heilmann
Content preview from Beginning JavaScript with DOM Scripting and Ajax, Second Edition
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CHAPTER 9
Data Validation Techniques
In this chapter, you will learn about using JavaScript to validate data entered by the user or coming from other systems. You already heard a lot about this in Chapter 2, which dealt with decisions involving data, and we will use some of that knowledge and extend it here.
Data validation has gone though some changes with the introduction of HTML5. Before, JavaScript was the first line of defense against having bad data possibly sent to the database. Now new features built into the browser help developers by removing a lot of the heavy lifting because the browser does a large part of the validation itself. ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.